Remove redundant calls to resize editable panels at creating time

The only purpose of this was to scroll the editable text correctly (see
https://github.com/jesseduffield/lazygit/pull/2146); now that gocui takes care
of that, we no longer need to do this.

pkg/gui/controllers/helpers/confirmation_helper.go

@@ -218,7 +218,6 @@ func (self *ConfirmationHelper) CreatePopupPanel(ctx goContext.Context, opts typ
 		textArea := confirmationView.TextArea
 		textArea.Clear()
 		textArea.TypeString(opts.Prompt)
-		self.resizeConfirmationPanel()
 		confirmationView.RenderTextArea()
 	} else {
 		self.c.ResetViewOrigin(confirmationView)